I fear where is all this is leading? 
WW III possibly.. My American colleague behind me tells me that if South Korea goes to war with North Korea then by the terms of their treaty, the US will have to go to war as an ally of South Korea..
Which means China will, of course, step in as an ally of N. Korea.
No doubt we'll get dragged in with the US either as part of the UN or as part of our 'special relationship'
And it'll all be downhill from there.
The end of the world is nigh!
Actually I don't think they would.
Why support a power mad dwarf when it will cause a world war and lose a lot of your countries income.
The Chinese are making a fortune being the manufacturers they are, going to war will lose that and risk their annihalation
Great point- the world is too economically linked for a full scale global nuclear war nowadays....I mean imagine the west decided not to pay China all the trillions we owe it? so North Korea may be truly "wonely", thats not to say WW3 wont happen as North Korea is bat-sh1t crazy 
What makes you think that any country would support N Korea to the brink of war? Negotiation is the buzz word for now, but sooner or later they will have to either be accomodated or put in their place.
The leadership of N Korea and certain other 'rogue' nations is backward and acts like a petulent child. They do not have the capability to cause any damage out side of the immediate region, despite the rhetoric, and will play up at every opportunity.
The worrying thing is that if we don't slap their behinds now, then they may gain the capability to cause trouble further afield.